Using data from a variety of sources, this report contributes to the understanding of COVID-19 outbreaks within state and federal prisons by addressing: 1) How do overall COVID-19 case and mortality rates within state and federal prisons compare with rates for the general population, both before and after adjusting for the age, race/ethnicity, and sex of people in prison? 2) How do COVID-19 infections vary by the type and location of a prison?